Specifications
| Nominal Voltage | 12V | |
| Rated Capacity (20 hour rate) | 40Ah | |
| Dimensions | Total Height (with terminals) | 6.69 inches (170mm) |
| Height | 6.69 inches (170mm) | |
| length | 7.76 inches (197mm) | |
| width | 6.50 inches (165mm) | |
| Weight | Approx 28.7 pound (13.0kg) | |
Characteristics
| Capacity 77°F (25°C) | 20 hour rate (2.0A) | 40Ah | |
| 10 hour rate (3.75A) | 37.5Ah | ||
| 5 hour rate (6.87A) | 34.35Ah | ||
| 1 hour rate (24.9A) | 24.9Ah | ||
| 15 minute rate (60.4A) | 15.1Ah | ||
| Internal Resistance | Full charged Battery 77°F (25°C) | 9.5mΩ | |
| Capacity Affected by Temperature (20 hour rate) | 104°F (40°C) | 102% | |
| 77°F (25°C) | 100% | ||
| 32°F (0°C) | 85% | ||
| 5°F (-15°C) | 65% | ||
| Self-Discharge 77°F (25°C) | Capacity after 3 month storage | 91% | |
| Capacity after 6 month storage | 81% | ||
| Capacity after 12 month storage | 60% | ||
| Max. Discharge Current 77°F (25°C) | 460A (5S) | ||
| Terminal | M2 / B5 / B11 | ||
| Charge
(constant voltage) |
Cycle | Initial charging current less than 12A | |
| Voltage 14.4~14.7 V / 77°F (25°C) | |||
| Float | Voltage 13.5~13.8V / 77°F (25°C) | ||
Discharge Curves 77°F (25°C)
Relationship between charge voltage and temperature
Constant Current Discharge (AMPERES @ 25°C)
| F.V/Time | 5min | 10min | 15min | 30min | 1h | 3h | 5h | 10h | 20h |
| 1.65 | 126 | 87.6 | 68.0 | 40.8 | 25.5 | 11.21 | 6.98 | 4.18 | 2.20 |
| 1.70 | 122 | 86 | 66.3 | 40.6 | 25.3 | 11.11 | 6.92 | 4.0 | 2.14 |
| 1.80 | 98 | 73.8 | 60.4 | 38.7 | 24.9 | 11.0 | 6.87 | 3.75 | 2.0 |
Constant Power Discharge (WATTS PER CELL @ 25°C)
| Cut off Voltage V/cell | 5min | 10min | 15min | 30min | 1h | 3h | 5h | 10h | 20h |
| 1.60 | 235.6 | 162.2 | 126.5 | 80.8 | 53.0 | 21.4 | 14.9 | 8.65 | 4.30 |
| 1.65 | 219 | 157 | 123 | 77.7 | 50.3 | 21.2 | 14.7 | 8.57 | 4.28 |
| 1.70 | 208 | 156 | 123.4 | 77.1 | 50.0 | 21.1 | 14.65 | 8.45 | 4.27 |
| 1.75 | 194 | 146 | 116 | 75.0 | 49.5 | 21.0 | 14.60 | 8.31 | 4.23 |
| 1.80 | 174 | 136 | 109 | 73.0 | 48.6 | 20.8 | 14.48 | 8.17 | 4.11 |
| 1.85 | 140 | 112 | 95 | 67.0 | 48.1 | 20.7 | 14.28 | 8.02 | 3.86 |
The operating environment temperature above 40°C should be avoided. After long term storage, the battery actual capacity would be less than the rated capacity. Full capacity will be obtained through several charge/discharge cycles.
To get the longest life, battery should be fully charged before storage.
Cycle service life in relation to depth of discharge
Constant voltage charge characteristic
Self-Discharge Characteristics
Relationship of OCV and Residual Capacity % (25 C°)
Temperature effects on capacity
Temperature effects float life
